数学题初二.?
问题描述:
数学题初二.?
㎡+m-1=0 ㎡×m+2㎡+2012=?高手回答,一定要对 .?
答
解析
m²+m=1
所以
m(m²+2m)+2012
=m(m²+m+m)+2012
=m(1+m)+2012
=m²+m+2012
=1+2012
=2013